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episode_tracker.py
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episode_tracker.py
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# -*- coding: utf-8 -*-
import json
import os
import logging
import sys
import codecs
reload(sys)
sys.setdefaultencoding('utf8')
sys.stdout = codecs.getwriter('utf8')(sys.stdout)
sys.stderr = codecs.getwriter('utf8')(sys.stderr)
logger = logging.getLogger(__name__)
class EpisodeManager(object):
"""Keeps track of the episdoe number of complicated episode feeds"""
def __init__(self, podcast, offset=0):
super(EpisodeManager, self).__init__()
logger.info('creating episode manger for %s' % podcast)
self.podcast = podcast
self.modified = False
if os.path.exists('episode_tracker/%s' % podcast):
logger.debug('loading existing data')
with open('episode_tracker/%s' % podcast) as f:
self.data = json.load(f)
else:
logger.debug('no existing data file')
self.data = {}
if offset:
for e in xrange(offset):
self.add_episode('filler', e)
def __enter__(self):
return self
def __exit__(self, e, ev, trace):
logger.info('saving episode data for %s' % self.podcast)
if self.modified:
with open('episode_tracker/%s' % self.podcast, 'w') as f:
self.data = json.dump(self.data, f, indent=4)
def add_episode(self, title, guid):
logger.debug('add episode %s' % title)
self.modified = True
if guid in self.data:
return
else:
self.data[guid] = {'title': title,
'number': len(self.data) + 1}
def get_episode_number(self, guid):
return self.data[guid]['number']
# def main():
# with EpisodeManager('oneshot-bonus', 6) as em:
# pass
# if __name__ == '__main__':
# main()